/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package com.android.talkback.tutorial.exercise;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.accessibility.AccessibilityEvent;
import com.android.talkback.contextmenu.MenuActionInterceptor;
import com.android.talkback.contextmenu.MenuTransformer;
import com.android.talkback.tutorial.TutorialLessonPage;
import com.android.utils.AccessibilityEventListener;

public abstract class Exercise implements AccessibilityEventListener {

    private ExerciseCallback mCallback;
    protected TutorialLessonPage mPage;

    public void setTutorialLessonPage(TutorialLessonPage page) {
        mPage = page;
    }

    public abstract View getContentView(LayoutInflater inflater, ViewGroup parent);

    public void onAccessibilityEvent(AccessibilityEvent event) {}

    public void onAction(Context context, String action) {}

    public void onInitialized(Context context) {}

    public void clear() {}

    public void setExerciseCallBack(ExerciseCallback callback) {
        mCallback = callback;
    }

    public boolean needScrollableContainer() {
        return false;
    }

    protected boolean notifyExerciseCompleted(boolean autoSwitchLesson, int completeMessageResId) {
        if (mCallback == null) {
            return false;
        }

        mCallback.onExerciseCompleted(autoSwitchLesson, completeMessageResId);
        return true;
    }

    public interface ExerciseCallback {
        public void onExerciseCompleted(boolean autoSwitchLesson, int completeMessageResId);
    }

    public MenuTransformer getContextMenuTransformer() {
        return null;
    }

    public MenuActionInterceptor getContextMenuActionInterceptor() {
        return null;
    }
}
